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Fix OSMesa library loading on macOS with robust path detection#314

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facebookresearch:mainfrom
Tigran01:osmesa_macos
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Fix OSMesa library loading on macOS with robust path detection#314
Tigran01 wants to merge 1 commit into
facebookresearch:mainfrom
Tigran01:osmesa_macos

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  • Add dynamic Homebrew prefix detection using 'brew --prefix'
  • Support both Apple Silicon (/opt/homebrew) and Intel (/usr/local) Macs
  • Check multiple library names and fallback locations
  • Graceful error handling for missing dependencies
  • Maintain backward compatibility with Linux/Ubuntu systems

Resolves OSMesa loading issues across different macOS configurations while preserving existing functionality on other platforms.

Fixes the following error:

{"error":"('Unable to load OpenGL library', "dlopen(OSMesa, 0x000A): tried: 'OSMesa' (no such file), '/System/Volumes/Preboot/Cryptexes/OSOSMesa' (no such file), '/Users/tigran/miniconda3/envs/animated_drawings/lib/python3.9/lib-dynload/../../OSMesa' (no such file), '/Users/tigran/miniconda3/envs/animated_drawings/bin/../lib/OSMesa' (no such file), '/usr/lib/OSMesa' (no such file, not in dyld cache), 'OSMesa' (no such file), '/usr/local/lib/OSMesa' (no such file), '/usr/lib/OSMesa' (no such file, not in dyld cache)", 'OSMesa', None)"}

- Add dynamic Homebrew prefix detection using 'brew --prefix'
- Support both Apple Silicon (/opt/homebrew) and Intel (/usr/local) Macs
- Check multiple library names and fallback locations
- Graceful error handling for missing dependencies
- Maintain backward compatibility with Linux/Ubuntu systems

Resolves OSMesa loading issues across different macOS configurations
while preserving existing functionality on other platforms.
@facebook-github-bot facebook-github-bot added the CLA Signed This label is managed by the Facebook bot. Authors need to sign the CLA before a PR can be reviewed. label May 27, 2025
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